【摘要】：長輸管道內(nèi)檢測是國內(nèi)外重要的管道腐蝕檢測技術(shù)之一,內(nèi)檢測器在管道內(nèi)的平穩(wěn)運行是保證其檢測精度、效率及可靠性的關(guān)鍵。但是目前國內(nèi)外對內(nèi)檢測器速度控制技術(shù)的研究還很不足,大多依靠理論分析、數(shù)值模擬或現(xiàn)場試驗等研究手段,因此,開發(fā)管道內(nèi)檢測器速度控制實驗裝置,通過管道內(nèi)檢測器流體動力學(xué)實驗,深入開展內(nèi)檢測器速度控制方式、控制裝置以及控制算法研究,對長輸管道內(nèi)檢測技術(shù)的工程應(yīng)用有著重要的意義。論文結(jié)合輸油管道工藝、水洞實驗和現(xiàn)代檢測技術(shù),設(shè)計并制造了一套管道內(nèi)檢測器速度控制實驗裝置。該實驗裝置模擬原油管道內(nèi)檢測器在水平直管中的運行過程,具有內(nèi)檢測器收發(fā)功能;設(shè)計的分段光電開關(guān)可有效檢測內(nèi)檢測器運動速度;基于PLC的數(shù)據(jù)采集系統(tǒng)可連續(xù)采集管道流量、壓力以及內(nèi)檢測器運動速度等實驗參數(shù);設(shè)計的內(nèi)檢測器實驗樣機(jī)可方便的搭載各種泄流調(diào)速裝置。實驗裝置滿足管道內(nèi)檢測器速度控制實驗的要求,適用于深入研究原油管道內(nèi)檢測器速度控制技術(shù)。論文提出了一種自平衡式泄流調(diào)速裝置,通過數(shù)值模擬計算了不同泄流調(diào)節(jié)片展開度下內(nèi)檢測器驅(qū)動力的變化情況,設(shè)計了相應(yīng)的拉伸彈簧,對帶有自平衡式泄流調(diào)速裝置的實驗樣機(jī)進(jìn)行了速度控制實驗,實驗結(jié)果表明自平衡式泄流調(diào)速裝置能消除復(fù)雜多變的流場帶來的壓力波動問題,有效控制內(nèi)檢測器在管道內(nèi)的運動速度。開發(fā)的管道內(nèi)檢測器速度控制實驗裝置為深入研究原油管道內(nèi)檢測器速度控制技術(shù)提供了很好的研究平臺。自平衡式泄流調(diào)速方式是管道內(nèi)檢測器重要的、適用的、有效的速度控制技術(shù)之一。
[Abstract]:The internal detection of long-distance pipeline is one of the most important pipeline corrosion detection techniques at home and abroad. The smooth operation of the internal detector in the pipeline is the key to ensure its detection accuracy, efficiency and reliability. But at present, the research of internal detector velocity control technology at home and abroad is still very insufficient, most of them rely on the theoretical analysis, numerical simulation or field test and other research means, therefore, the development of the pipeline detector speed control experimental equipment, Through the hydrodynamics experiment of the in-pipe detector, the research on the speed control mode, the control device and the control algorithm of the inner detector is of great significance to the engineering application of the internal detection technology of the long-distance pipeline. Combined with oil pipeline technology, water tunnel experiment and modern detection technology, this paper designs and manufactures a set of experimental device for velocity control of in-pipe detector. The experimental device simulates the operation process of the inner detector in the horizontal straight pipe, and has the function of receiving and receiving the inner detector, and the designed subsection photoelectric switch can detect the movement speed of the inner detector effectively. The data acquisition system based on PLC can continuously collect the experimental parameters such as pipeline flow pressure and velocity of the inner detector and the designed experimental prototype of the inner detector can be conveniently loaded with various discharge speed regulating devices. The experimental device meets the requirements of the velocity control experiment of the in-pipeline detector and is suitable for the further study of the velocity control technology of the inner detector of the crude oil pipeline. In this paper, a self-balanced discharge speed regulating device is proposed. The driving force of the inner detector is calculated by numerical simulation, and the corresponding tension spring is designed, and the driving force of the inner detector is calculated by numerical simulation. The speed control experiment of the experimental prototype with self-balanced discharge speed regulating device is carried out. The experimental results show that the self-balanced discharge speed regulating device can eliminate the pressure fluctuation caused by the complex and changeable flow field. Effectively control the velocity of the internal detector in the pipe. The developed velocity control device for in-pipeline detector provides a good research platform for further research on velocity control technology of in-pipeline detector. Self-balanced discharge speed regulation is one of the most important, applicable and effective speed control techniques for in-pipe detectors.
【學(xué)位授予單位】：北京石油化工學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE973.6

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